Orientation engineering in complementary metal oxide semiconductor fin field effect transistor integration for increased mobility and sharper junction

Abstract

A semiconductor device that includes at least one germanium containing fin structure having a length along a <100> direction and a sidewall orientated along the (100) plane. The semiconductor device also includes at least one germanium free fin structure having a length along a <100> direction and a sidewall orientated along the (100) plane. A gate structure is present on a channel region of each of the germanium containing fin structure and the germanium free fin structure. N-type epitaxial semiconductor material having a square geometry present on the source and drain portions of the sidewalls having the (100) plane orientation of the germanium free fin structures. P-type epitaxial semiconductor material having a square geometry is present on the source and drain portions of the sidewalls having the (100) plane orientation of the germanium containing fin structures.

What is claimed is: 
     
       1. A method of forming a semiconductor device comprising:
 forming a plurality of fin structures from a silicon substrate, the plurality of fin structures having a sidewall along the (100) plane; 
 converting at least one of the fin structures to germanium containing type fin structures having germanium induced strain by a germanium condensation method that includes forming a germanium containing layer on the fin structures comprised of silicon, and intermixing the germanium from the germanium containing layer with the silicon of the fin structures under an oxidizing atmosphere to provide a single crystal silicon germanium material having a compressive strain on the fin structures being converted having a sidewall along the (100) plane, wherein at least one remaining of the fin structures is germanium free and is not subjected to the germanium induced strain; 
 forming n-type epitaxial semiconductor material having a rectangular geometry on source and drain portions of the sidewalls having the (100) plane of the fin structures that are germanium free, and 
 forming p-type epitaxial semiconductor material having a rectangular geometry on source and drain portions of the sidewalls having the (100) plane of the germanium containing type fin structures to provide a p-type FinFET, wherein the compressive strain increases carrier speed of the p-type FinFET in the <100> direction. 
 
     
     
       2. The method of  claim 1 , wherein the silicon containing semiconductor substrate is comprised entirely of silicon (Si). 
     
     
       3. The method of  claim 1 , wherein the silicon containing semiconductor substrate is monocrystalline silicon (Si), microcrystalline silicon, or polycrystalline silicon (Si). 
     
     
       4. The method of  claim 1 , wherein said converting the at least one of the fin structures to germanium containing type fin structures, wherein said at least one remaining of the fin structures is germanium free comprises:
 forming a block mask over fin structures that are not converted, wherein fin structures that are to be converted to said germanium containing type fin structures are exposed; forming a germanium layer on said at least one of the fin structures that are to be converted to the germanium containing type fin structures; and 
 diffusing germanium from the germanium layer into the at least one of the fin structures that provides the germanium containing type fin structures. 
 
     
     
       5. The method of  claim 4 , wherein the germanium layer is formed using an epitaxial growth process. 
     
     
       6. The method of  claim 4 , wherein said diffusing germanium from the germanium layer into the at least one of the fin structures comprises a thermal anneal. 
     
     
       7. The method of  claim 6 , wherein said thermal anneal is in an oxidizing atmosphere. 
     
     
       8. The method of  claim 1 , wherein the germanium containing type fin structures are under a compressive strain. 
     
     
       9. A method of forming a semiconductor device comprising:
 forming a plurality of fin structures having a sidewall along the (100) plane from a silicon substrate; 
 converting at least one of the fin structures to germanium containing type fin structures having germanium induced strain by a germanium condensation method that includes forming a germanium containing layer on the fin structures comprised of silicon, and intermixing the germanium from the germanium containing layer with the silicon of the fin structures under an oxidizing atmosphere to provide a single crystal silicon germanium material having a compressive strain on the fin structures being converted, the single crystal silicon germanium material having a sidewall along the (100) plane, wherein at least one remaining of the fin structures is germanium free and is not subjected to the germanium induced strain; 
 forming gate structures on channel region portions of said germanium containing type fin structures and the fin structures that are germanium free; 
 forming N-type epitaxial silicon having rectangular growth on the sidewalls having the (100) plane of the fin structures that are germanium free on opposing sides of the channel region; and 
 forming P-type epitaxial silicon having rectangular growth on the sidewalls having the (100) plane of the germanium containing type fin structures on opposing sides of the channel region to provide a p-type FinFET, wherein the compressive strain increases carrier speed of the p-type FinFET in the <100> direction. 
 
     
     
       10. The method of  claim 9 , wherein said converting the at least one of the fin structures to germanium containing type fin structures, wherein said at least one remaining of the fin structures is germanium free comprises:
 forming a block mask over fin structures that are not converted, wherein fin structures that are to be converted to said germanium containing type fin structures is exposed; 
 forming a germanium layer on said at least one of the fin structure that is to be converted to the germanium containing type fin structures; and 
 diffusing germanium from the germanium layer into the at least one of the fin structures that provides the germanium containing type fin structures. 
 
     
     
       11. The method of  claim 10 , wherein the germanium layer is formed using an epitaxial growth process. 
     
     
       12. The method of  claim 9 , wherein said diffusing germanium from the germanium layer into the at least one of the fin structures comprises a thermal anneal. 
     
     
       13. The method of  claim 12 , wherein said thermal anneal is in an oxidizing atmosphere. 
     
     
       14. The method of  claim 9 , wherein the germanium containing type fin structures are under a compressive strain.